Penerbit: Department of Physics, Faculty of Mathematics and Natural Science, University of Lampung
P-ISSN: 2747-2043
E-ISSN: 2747-299X
DOI: 10.23960/jemit
Fakultas Matematika dan Ilmu Pengetahuan Alam Fisika dan Astronomi Arsitektur
Artikel (130)
The Effect of Adding Corn Cob Ash to The Physical and Mechanical Properties of Mortar
Karo, Pulung Karo, Rio Orlando Pratama, Marjunus, Roniyus
The research was carried out about the effect of adding corn cob ash on mortar's physical and mechanical properties. Mortar was molded with three compositions, i.e., portland cement, corn cob ash, and corn husk fiber. Corn cob ash was burned at a temperature of 700  for 2 hours. Corn husk fiber was...
Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 1 (2023): Journal of Energy, Material, and Instrumentation Technology; 19-26 | 2023
Heating Rate Control in Electric Furnace with SSR and K-Type Thermocouple Using Arduino Uno Atmega 328P
Pratama, Bayu Ega, Pauzi, Gurum Ahmad, Suciyati, Sri Wahyu
Electric furnace is a tool that can be used to melt, heat, and change the physical shape of a substance. Electric furnaces sold in the market are still relatively expensive, therefore it is necessary to make an electric furnace at a low cost. This research designed...
Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 1 (2023): Journal of Energy, Material, and Instrumentation Technology; 10-18 | 2023
Effect of Concentration Variation of Cacao Leaf Extract (Theobroma cacao.) Inhibitor on the Corrosion Rate of ST 37 Steel in 3% HCl Solution
Syafriadi, Syafriadi, Adriana, Risca, Riyanto, Agus
The effectiveness of cacao leaf extract (Theobroma Cacao.) used as an inhibitor on St 37 steel sample. Which cures in HCl 3 % Corrosive Medium for 144 hours, the inhibitor concentration variation added 0 %, 3%, 6 %, 9 %, and 12 %, respectively. The sample rate is measured by using the loose-weight m...
Journal of Energy, Material, and Instrumentation Technology; Vol. 4 No. 1 (2023): Journal of Energy, Material, and Instrumentation Technology; 1-9 | 2023
Design of Computer Based 12 Lead ECG Using STM32F401 Microcontroller
Darmawan, Reyhan Issatyadi , Surtono, Arf, Apriyanto, Donni Kis
The research of designing computer-based 12 lead ECG using STM32F401 microcontroller has been done. ECG is a healthcare device recording heart electrical activity and assesses heart condition. ECG was chosen for health condition check-ups because it is low-cost and can monitor heart conditions in re...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 4 (2022): Journal of Energy, Material, and Instrumentation Technology; 147-156 | 2022
The Effect of Cacao Leaf Extract as An Inhibitor with A Concentration Variation of 0%, 3%, 5%, And 7% on The Corrosion Rate of St 37 Steel with Immersion Time of 3 Days And 6 Days in NaCl Corrosive Medium 3%
Diana, Nia , Ginting, Ediman, Karo, Pulung Karo
This study aims to determine the effect of adding inhibitors of cacao leaf extract with concentrations of 0%, 3%, 5%, and 7% in 3% NaCl corrosive medium on the corrosion rate of St 37 steel, knowing the effect of cacao leaf extract in inhibiting the corrosion rate of St 37 steel in NaCl solution and...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 4 (2022): Journal of Energy, Material, and Instrumentation Technology; 138-146 | 2022
Automatization of Weight and Height Measurement Using Ultrasonic Sensors HC-SR04 and Load Cell Based on Arduino UNO at Integrated Services Posts (Posyandu)
Ulyanida, Syifa, Supriyanto, Amir, Suciyati, Sri Wahyu
An automatic instrument for measuring weight and height has been realized using the HC-SR04 Ultrasonic Sensor and Arduino Uno-based load cell. This study aims to facilitate the weight and height measurement system to make data collection more efficient and accessible. The instrument is assembled by ...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 4 (2022): Journal of Energy, Material, and Instrumentation Technology; 127-137 | 2022
The Effect of Sintering Time on the Formation of the BPSCCO-2212 Superconductor Phase at The Levels of Ca=1.10 Using the Wet Mixing Method
Asih, Retno, Suprihatin, Suprihatin, Sembiring, Simon
Bi1.7Pb0.3Sr2Ca1.10Cu2O8+δ (BPSCCO-2212) superconductors. Samples were synthesized via the wet mixing method, calcined at 800 °C for 10 hours, and sintered at 830 °C with dwelling times varied between 10 and 40 hours. X-ray diffraction (XRD) analysis revealed that the volume fraction of...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 4 (2022): Journal of Energy, Material, and Instrumentation Technology; 121-126 | 2022
Soliton Dynamics Analysis of Peyrard-Bishop-Dauxois DNA Model Using 4th Order Morse Potential Approach
Lubis, Alfin Edo Kaisar, Yulianti, Yanti, Riyanto, Agus
Research has been carried out to analyze the dynamics of the soliton DNA of the Peyrard-Bishop-Dauxois (PBD) model with 4th-order-approximation Morse Potential. The aim of research is to know physical changes of PBD model with  4th-order-approximation Morse Potential on stable and unstable state in...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 4 (2022): Journal of Energy, Material, and Instrumentation Technology; 115-120 | 2022
Electrical Characteristics of Chitosan-Carrageenan Membrane Implementation and Salt Bridge in Microbial Fuel Cell Using Yeast Fermented Cassava Waste Substrate
Srinurfitri, Ferina , Supriyanto, Amir , Pauzi, Gurum Ahmad
A Microbial Fuel Cell (MFC) is an electrochemical system that generates energy utilizing waste as a substrate and the results of microbial metabolism processes. This research utilizes yeast fermented cassava waste as a substrate to determine the electrical characteristics of PEM in the form of a chi...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 3 (2022): Journal of Energy, Material, and Instrumentation Technology; 105 - 114 | 2022
Smart Greenhouse on Monitoring of Soil Temperature and Humidity Control of Orchid Plants Using Internet of Things (IoT)
Mas, Feri Aditya Ridwan , Suciyati, Sri Wahyu , Pauzi, Gurum Ahmad
Research on monitoring systems with control has been developed with several different inputs and outputs. This research has realized a smart greenhouse monitoring tool with temperature and soil moisture control on orchid plants based on the Internet of Things (IoT). This study aims to create a monit...
Journal of Energy, Material, and Instrumentation Technology; Vol. 3 No. 3 (2022): Journal of Energy, Material, and Instrumentation Technology; 79 - 88 | 2022